The reason is that I just failed to draw that doll properly. Men who know nothing about Touhou, spend a lot of time to recognize it. The most common their question is: "What the heck you placed on the foreground?"
I absolutely love the concept and the background is just amazing! :0 How you put in so much detail is just really impressing! And the lighting is great too. It's very realistic looking. I really loveeee Touhou fanart with interesting concepts like this. Your art is really awesome. ;o;